:root{
  --brand:#1F6FD5;
  --brand-dark:#1656A8;
  --ink:#0B1F3A;
  --ink-soft:#2A3D58;
  --muted:#5F6B7A;
  --line:#E4E9F0;
  --tint:#F5F7FA;
  --tint-2:#EBF2FF;
  --wa:#1a8f3c;
  --shadow-sm:0 2px 8px rgba(11,31,58,.06);
  --shadow-md:0 8px 24px rgba(11,31,58,.08);
  --shadow-lg:0 18px 48px rgba(11,31,58,.12);
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:18px;
}

/* ───── Top info bar ───── */
.topbar{background:var(--ink);padding:10px 0;font-size:13px;color:#fff;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;}
.topbar-info{display:flex;gap:26px;align-items:center;flex-wrap:wrap;}
.topbar-info a{color:#fff;text-decoration:none;display:inline-flex;align-items:center;gap:8px;opacity:.92;transition:opacity .2s;}
.topbar-info a:hover{opacity:1;color:#6BAEFF;}
.topbar-social{display:flex;gap:12px;align-items:center;font-size:12px;color:rgba(255,255,255,.6);}
.topbar-social a{
  width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:#fff;text-decoration:none;
  font-size:11px;font-weight:700;transition:all .2s;
}
.topbar-social a:hover{background:var(--brand);transform:translateY(-1px);}

/* ───── Main nav with scroll shadow ───── */
.site-header{
  background:#fff;border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:999;
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(11,31,58,.08);border-bottom-color:transparent;}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:16px 0;gap:24px;}
.nav-logo img{height:52px;display:block;transition:transform .25s;}
.nav-logo:hover img{transform:scale(1.03);}
.main-nav{display:flex;gap:20px;align-items:center;}
.main-nav a{
  position:relative;
  text-decoration:none;color:var(--muted);
  font-weight:600;font-size:15px;
  padding:10px 14px;border-radius:7px;
  transition:all .2s ease;
}
.main-nav a:hover{color:var(--brand);background:var(--tint-2);}
.main-nav a.active{color:var(--ink);}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;background:var(--brand);border-radius:2px;
}

/* ───── Mega Menu ───── */
.has-megamenu { position: relative; }
.megamenu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px);
  width: 1100px; max-height: 85vh; overflow-y: auto; background: #fff; border-top: 3px solid var(--brand);
  box-shadow: var(--shadow-lg); padding: 30px;
  opacity: 0; visibility: hidden; transition: all 0.3s ease;
  z-index: 9999;
  display: block;
}
.has-megamenu:hover .megamenu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

.mega-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.mega-col h4 { font-size: 13px; font-weight: 700; color: var(--brand); text-transform: uppercase; margin-bottom: 15px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.mega-links { list-style: none; padding: 0; margin: 0; }
.mega-links li { margin-bottom: 8px; }
.mega-links a { font-size: 14px; color: var(--ink-soft); text-decoration: none !important; transition: all 0.2s !important; padding: 0 !important; background: none !important; border: 0 !important; display: block !important; }
.mega-links a:hover { color: var(--brand) !important; padding-left: 4px !important; }

.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-cta .btn-primary{
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--brand); color: #FFFFFF;
    height: 46px; padding: 0 26px;
    border-radius: 7px;
    font-family: 'Inter', sans-serif;
    font-size: 15px; font-weight: 600;
    text-decoration: none; border: none; cursor: pointer;
    white-space: nowrap; flex-shrink: 0;
    transition: all .2s;
    box-shadow:0 4px 12px rgba(31,111,213,.28);
}
.nav-cta .btn-primary:hover{ 
    background: var(--brand-dark); color: #FFFFFF;
    box-shadow:0 6px 18px rgba(31,111,213,.38);transform:translateY(-1px);
}

/* ───── Nav Backdrop Overlay ───── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 31, 58, 0.4);
  backdrop-filter: blur(4px);
  z-index: 997; /* Just below main-nav's z-index: 998 */
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Mobile menu toggle */
.menu-toggle{display:none;background:none;border:0;width:42px;height:42px;border-radius:8px;cursor:pointer;align-items:center;justify-content:center;}
.menu-toggle:hover{background:var(--tint);}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--ink);position:relative;transition:.25s;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:22px;height:2px;background:var(--ink);transition:.25s;}
.menu-toggle span::before{top:-7px;}
.menu-toggle span::after{top:7px;}
.menu-toggle.open span{background:transparent;}
.menu-toggle.open span::before{top:0;transform:rotate(45deg);}
.menu-toggle.open span::after{top:0;transform:rotate(-45deg);}

@media (max-width:1024px){
  .megamenu { width: 700px; }
}

@media (max-width:768px){
  .topbar .container{flex-direction:column;gap:10px;align-items:flex-start;}
  .main-nav{
    position:fixed;top:0;right:-100%;bottom:0;
    background:#fff;width:80%;max-width:320px;
    flex-direction:column;gap:6px;padding:90px 20px 20px;
    box-shadow:-10px 0 40px rgba(0,0,0,.14);
    transition:right .3s;z-index:998;
    display: flex;
  }
  .main-nav.open{right:0;}
  .main-nav a{padding:14px 16px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .menu-toggle{display:inline-flex;}
  .nav-cta .btn-primary{display:none;}
  
  .megamenu {
    position: static; width: 100%; transform: none;
    opacity: 0; visibility: hidden;
    max-height: 0; overflow: hidden;
    box-shadow: none; padding: 0 20px; border: 0;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, padding 0.35s ease;
  }
  .has-megamenu.open .megamenu {
    opacity: 1;
    visibility: visible;
    max-height: 1200px;
    padding: 10px 20px;
  }
  .mega-grid { grid-template-columns: 1fr; gap: 16px; }
  .mega-col h4 { margin-top: 10px; }
}

/* ───── Floating Actions ───── */
.fab-wa {
  position: fixed; right: 24px; bottom: 24px; z-index: 1000;
  width: 58px; height: 58px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 25px rgba(37,211,102,0.4);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-decoration: none;
}
.fab-wa:hover { transform: scale(1.1) translateY(-5px); box-shadow: 0 15px 30px rgba(37,211,102,0.5); }
.fab-wa svg { width: 32px; height: 32px; fill: currentColor; }
.fab-wa::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid #25D366; opacity: 0;
  animation: wa-pulse 2s infinite;
}
@keyframes wa-pulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.6); opacity: 0; }
}

.back-to-top {
  position: fixed; right: 30px; bottom: 100px; z-index: 999;
  width: 46px; height: 46px; border-radius: 50%;
  background: #fff; color: var(--ink); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); cursor: pointer; font-size: 18px;
  opacity: 0; visibility: hidden; transform: translateY(20px);
  transition: all 0.3s;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--brand); color: #fff; border-color: var(--brand); transform: translateY(-5px); }

@media (max-width: 640px) {
  .fab-wa { right: 16px; bottom: 16px; width: 52px; height: 52px; }
  .fab-wa svg { width: 28px; height: 28px; }
  .back-to-top { right: 19px; bottom: 84px; width: 40px; height: 40px; }
}